v3.26.1
Pay vs Performance Disclosure - USD ($)
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Pay vs Performance Disclosure          
Pay vs Performance Disclosure, Table
Value of Initial Fixed $100 
Investment Based On:
Year
Summary
Compensation
Table Total for
PEO Flanagan(1)
($)
Compensation
Actually Paid
to PEO
Flanagan (1)(2)
($)
Summary
Compensation
Table Total for
Former PEO
Kessler(3)
($)
Compensation
Actually Paid to
Former
PEO Kessler (3)(2)
($)
Summary
Compensation
Table Total for
Former PEO
Rintoul(4)
($)
Compensation
Actually Paid
to Former
PEO
Rintoul(4)(2)
($)
Average
Summary
Compensation
Table Total for
Non-PEO
Named
Executive
Officers(5)
($)
Average
Compensation
Actually Paid to
Non-PEO
Named
Executive
Officers(5)(6)
($)
GrafTech
Total
Stockholder
Return		NYSE Arca
Steel Index
(TR)
Total
Stockholder
Return		Net
(Loss)
Income
(in
000s)
($)
Adjusted
EBITDA(7)
(in 000s)
($)
20252,042,5001,837,326N/AN/AN/AN/A1,065,091764,312$15$237(219,835)(9,088)
20243,023,5062,393,131N/AN/AN/AN/A1,494,2321,393,696$16$162(131,165)1,632
20231,535,021808,4533,521,684674,631N/AN/A1,423,584727,028$21$196(255,250)20,484
2022N/AN/A1,407,2681,153,7101,406,1501,405,9931,538,3051,097,819$45$148382,962536,464
2021N/AN/AN/AN/A3,445,2574,377,4356,471,2726,656,296$111$129388,330669,940
        
Company Selected Measure Name adjusted EBITDA        
Named Executive Officers, Footnote Mr. Flanagan was appointed Interim Chief Executive Officer and President as of November 15, 2023 and became our Chief Executive Officer and President on March 26, 2024. Mr. Flanagan previously served as our Chief Financial Officer, Senior Vice President Finance and Treasurer since November 29, 2021. Our principal executive officer is
referred to as the “PEO” in this disclosure. Mr. Flanagan was one of our PEOs during 2023 and was our only PEO during 2024 and 2025.
Mr. Kessler was one of our PEOs during each of 2023 and 2022. Mr. Kessler resigned from the Company as our Chief Executive Officer and President as of November 15, 2023.
(4)Mr. David J. Rintoul was our only PEO during 2021, and one of our PEOs during 2022. Mr. Rintoul resigned from the Company as our Chief Executive Officer and President on June 30, 2022.
(5)The identity of the non-PEO NEOs for each of 2025, 2024, 2023, 2022, and 2021 (each, a “Covered Year”) are as follows:

YearNon-PEO NEOs
2021Timothy K. Flanagan, Quinn J. Coburn, Jeremy S. Halford, Iñigo Perez Ortiz, Gina K. Gunning
2022Timothy K. Flanagan, Jeremy S. Halford, Iñigo Perez Ortiz, Gina K. Gunning
2023Catherine Hedoux-Delgado, Jeremy S. Halford, Iñigo Perez Ortiz, Gina K. Gunning
2024Rory F. O’Donnell, Catherine Hedoux-Delgado, Jeremy S. Halford, Iñigo Perez Ortiz, Gina K. Gunning
2025Rory F. O’Donnell, Jeremy J. Clemens, Jeremy S. Halford, Iñigo Perez Ortiz, Andrew J. Renacci
       
Adjustment To PEO Compensation, Footnote
2025
Flanagan
SCT Total Compensation$2,042,500
Less: Stock Award Value Reported in SCT for the Covered Year$(972,000)
Less: Option Award Value Reported in SCT for the Covered Year—
Plus: Covered Year-End Fair Value for Stock Awards Granted in the Covered Year$1,188,540
Change in Fair Value (from Prior Year-End to Covered Year-End) of Covered Year-End Outstanding Unvested Stock Awards Granted Prior to Covered Year$(292,046)
Change in Fair Value (from Prior Year-End to Vesting Date) of Stock Awards Granted Prior to Covered Year that Vested in the Covered Year$(129,668)
Fair Value as of the Vesting Date for Stock Awards Granted and Vested in the Covered Year—
Less: Prior Year-End Fair Value of Stock and Option Awards Forfeited in the Covered Year—
Compensation Actually Paid$1,837,326
        
Non-PEO NEO Average Total Compensation Amount $ 1,065,091 $ 1,494,232 $ 1,423,584 $ 1,538,305 $ 6,471,272
Non-PEO NEO Average Compensation Actually Paid Amount $ 764,312 1,393,696 727,028 1,097,819 6,656,296
Adjustment to Non-PEO NEO Compensation Footnote
2025
Non-PEO
NEOs
SCT Total Compensation$1,065,091
Less: Stock Award Value Reported in SCT for the Covered Year$(438,022)
Less: Option Award Value Reported in SCT for the Covered Year-
Plus: Covered Year-End Fair Value for Stock Awards Granted in the Covered Year$403,301
Change in Fair Value (from Prior Year-End to Covered Year-End) of Covered Year-End Outstanding Unvested Stock Awards Granted Prior to Covered Year$(53,216)
Change in Fair Value (from Prior Year-End to Vesting Date) of Stock Awards Granted Prior to Covered Year that Vested in the Covered Year$(60,233)
Fair Value as of the Vesting Date for Stock Awards Granted and Vested in the Covered Year-
Less: Prior Year-End Fair Value of Stock Awards Forfeited in the Covered Year(152,609)
Compensation Actually Paid$764,312
        
Compensation Actually Paid vs. Total Shareholder Return
1084
        
Compensation Actually Paid vs. Net Income
1080
        
Compensation Actually Paid vs. Company Selected Measure
1082
        
Total Shareholder Return Vs Peer Group
1084
        
Tabular List, Table
Performance MeasureNatureExplanation
Adjusted EBITDAFinancial Measure
A non-GAAP financial measure. See “Appendix A” to this Proxy Statement for additional information, including how we define this financial measure and a reconciliation to Net (Loss) Income, the most directly comparable financial measure calculated and presented in accordance with U.S. GAAP.
Adjusted Free Cash FlowFinancial Measure
A non-GAAP financial measure. See “Appendix A” to this Proxy Statement for additional information, including how we define this financial measure and a reconciliation to Net Cash (used in) Provided by Operating Activities, the most directly comparable financial measure calculated and presented in accordance with U.S. GAAP.
Relative Total Shareholder ReturnFinancial MeasureOur PSUs are based on our relative total shareholder return achievement, with total shareholder return (measured by stock performance price and any dividends reinvested) for us compared against that for a peer group.
        
Total Shareholder Return Amount $ 15 16 21 45 111
Peer Group Total Shareholder Return Amount 237 162 196 148 129
Net Income (Loss) $ (219,835,000) $ (131,165,000) $ (255,250,000) $ 382,962,000 $ 388,330,000
Company Selected Measure Amount (9,088,000) 1,632,000 20,484,000 536,464,000 669,940,000
Additional 402(v) Disclosure “Compensation actually paid” to our CEO in 2025 reflects the respective amount set forth in the table above, adjusted as set forth in the table below, as determined in accordance with SEC rules. The dollar amount reflected in the table above does not reflect the actual amount of compensation earned by or paid to our CEO during 2025. For information regarding the decisions made by our Human Resources and Compensation Committee in regards to the CEO’s and each of our former CEOs’ compensation for each fiscal year, please see the “Compensation Discussion & Analysis” sections of the proxy statements reporting pay for the fiscal years covered in the table above. Please note that while similar adjustment information was provided in our 2025 proxy statement for Covered Years (as defined below) 2021, 2022, 2023 and 2024 under applicable SEC guidance, repeating such adjustment information is not required in this Proxy Statement because in our view it is not material to our stockholders’ understanding of the information reported in the Pay Versus Performance table above for 2025 or the relationships disclosures provided below. Average “compensation actually paid” for our non-PEO NEOs in 2025 reflects the respective amount set forth in the table above, adjusted as set forth in the table below, as determined in accordance with SEC rules. The dollar amount reflected in the table above does not reflect the actual amount of compensation earned by or paid to our non-PEO NEOs during 2025. For information regarding the decisions made by our Human Resources and Compensation Committee in regards to the non-PEO NEOs’ compensation for each fiscal year, please see the “Compensation Discussion & Analysis” sections of the proxy statements reporting pay for the fiscal years covered in the table above. Please note that while similar adjustment information was provided in our 2025 proxy statement for Covered Years 2021, 2022, 2023, and 2024 under applicable SEC guidance, repeating such adjustment information is not required in this Proxy Statement because in our view it is not material to our stockholders’ understanding of the information reported in the Pay Versus Performance table above for 2025 or the relationships disclosures provided below.        
Measure:: 1          
Pay vs Performance Disclosure          
Name Adjusted EBITDA        
Non-GAAP Measure Description A non-GAAP financial measure. See “Appendix A” to this Proxy Statement for additional information, including how we define this financial measure and a reconciliation to Net (Loss) Income, the most directly comparable financial measure calculated and presented in accordance with U.S. GAAP.        
Measure:: 2          
Pay vs Performance Disclosure          
Name Adjusted Free Cash Flow        
Measure:: 3          
Pay vs Performance Disclosure          
Name Relative Total Shareholder Return        
Flanagan [Member]          
Pay vs Performance Disclosure          
PEO Total Compensation Amount $ 2,042,500 $ 3,023,506 $ 1,535,021    
PEO Actually Paid Compensation Amount $ 1,837,326 $ 2,393,131 808,453    
PEO Name Mr. Flanagan Mr. Flanagan      
Kessler [Member]          
Pay vs Performance Disclosure          
PEO Total Compensation Amount     3,521,684 $ 1,407,268  
PEO Actually Paid Compensation Amount     $ 674,631 $ 1,153,710  
PEO Name     Mr. Kessler Mr. Kessler  
David J. Rintoul [Member]          
Pay vs Performance Disclosure          
PEO Total Compensation Amount       $ 1,406,150 $ 3,445,257
PEO Actually Paid Compensation Amount       $ 1,405,993 $ 4,377,435
PEO Name         Mr. David J. Rintoul
PEO | Flanagan [Member] | Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount $ 1,188,540        
PEO | Flanagan [Member] | Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount (292,046)        
PEO | Flanagan [Member] | Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount 0        
PEO | Flanagan [Member] | Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount (129,668)        
PEO | Flanagan [Member] | Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount 0        
PEO | Flanagan [Member] | Stock Award Values Reported In SCT For The Covered Year [Member]          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount (972,000)        
PEO | Flanagan [Member] | Option Award Values Reported in SCT for the Covered Year [Member]          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount 0        
Non-PEO NEO | Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount 403,301        
Non-PEO NEO | Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount (53,216)        
Non-PEO NEO | Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount 0        
Non-PEO NEO | Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount (60,233)        
Non-PEO NEO | Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount (152,609)        
Non-PEO NEO | Stock Award Values Reported In SCT For The Covered Year [Member]          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount (438,022)        
Non-PEO NEO | Option Award Values Reported in SCT for the Covered Year [Member]          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount $ 0